Cylinder-cock.



PATBN'TED 1120.25, 1906.

, lE. H. oBERToP, CYLINDER 000K. 4 LPPLITION FILED LUG. 19, 1905 f withthe cylinder-cocks by one or more levers .UNITED sTArEs PATENT OEEICE.

EARL H. OBER'IOP, OE CHICAGO, ILLINOIS.

' i CYLINDER-COCK.

I No. 839,188.

Specification of Letters Patent.

Patented Dec. 25, i906.

Application filed August 19, 1905. Serial No. 274,822.

pivoted to the piston-rod and to the cam-bar actuating ,the cocks offand on their seats.

The prime obi'ects of this invention are to dispense l'with al leverconnections between the aiiressure cylinder and the actuating lcam roti)or bar ,for the cylinder-cocks and to utilize steam as well asair-pressure for actuating the cocks.

A further object of this invention is to control the supply ofexhauststeam and air to the cylinder actuating the cam-bar by thesingle, three-way cock and at such a point that said cock isconveniently accessible to the engineer and whereby at will he lmayutilizeeither air from the brake system or steam from the. boiler foractuating the cylindercocks on and off their seats.

A further object of this invention is to prolvide means whereby thecylinder-cocks will unseat when either'the air-pressure inthe brakesystem or the steam-pressure inthe boiler is below thenormal pressureeither or bd th are intended to have, and it will be indica ed to, theengineer b the escape of conv densations from the cy inder, owmg to theautomatic actuation of the cylinder-cocks of their seats by suchreduction ilipressure.

sists in certain features and novelty in construction, combination, andarrangement of parts by which sald objects and certain other objectshereinafter vappearing are attained,

all as fully "described in referenceto the accompanying drawings, andmore particularly pointed out in the claims. l

` In said drawings, Figure 1 illustrates a ver;

tical vsection through a 'cylinder-cockstructure containin my'invention,with a detail portion ofa cy Inder likewise shown; Fig. 2, ,lsideelevation Aof a railroad-engine boiler,

inder, and the A illustrating the application of my inventionl thereto;and Fig. 3, an enlarged cross-section of the three-way cock shown in Fi2 for regulatingvthe supply and'exhaust of oth steam y and air to thepressure-cylinder directlyA employed for actuating the cylinder-cocks.

Similar numerals of reference indicate the same parts in the severalfigures ofthe draw- In s.

indicates a steam-cylinder of ordinary construction rovided with openins 5 5 in its bottom and) respectively toward t e opposite ends thereof,Into which, as shown at the left in Fig. 1, is screwed or otherwisesecured a two-part cylindercock casin com rising the portion 6,screwthreaded mto t e cylpart 7, united by a screwthreaded coil 8, whichwhen secured in its operative position impinges against a angesurrounding the part 6 and is screw-threaded upon the part' 7. In andbetween this twopart casing and formed partlyin each is a cone-shapedchamber 9, forming a receptacle for condensations when the valvey10 ison its seat 1 1, formed in the part 7 of the casing, but which affords apassage through -which condensat-ions in the cylinder are conducted in itheir discharge from the cock.

The valve 10 is provided'with a stem 12, surrounded by an enlargedchamber 13, opening outwardly from the casing 7 at 14,

vand has on its lower end an elongated weight 15, passing through thelower portion of the casing 7 into a chamber 16, formed in the end wall17 of a cylinder 18 and adapted to engage by gravity with a piston-rod19, on

which 'is a piston 20 and a coiled `spring 21,

the latter surrounding the iston-rod at a pointbetween the piston an theend of the cylinder and by its expansion tending to maintain the pistonin the position shown in Fig. 1 and the cylinder-cock in an elevated n tposition above its seat. With these ends'm view my Invention con- Thepiston-rod 19is` rovided vwith cutaway portions 22, providingcam-surfaces 23, by means of which the valves and thelcylinder-cock areunseated, as shown in Fig. 1. and also seated when thelvalve-rod is moveforward inthe direction indicated by.the arrow in said figure by meanspresently'to be described.'

Instead of the s ecific construction of valve-cock shown in ig. 1that isto sa ,in whichthe valve seats inside the shell o the IOO IIO

valve-cock-said valvemay be projected beyond the inner end of said shelland have its seat' externally of the shell, and said seat may be formedin a suitable plate 24, secured to the end of a shell, which, as shown,may be 4entirely in one piece with an enlarged continuous chambersurrounding the thereby necessarily elongated valve-stem 12 andterminating in the outlet 14, the stem being provided with a weight 15,corres ending with that shown in the structure at t e left of Fig. 1 andadaptedI to engage and be actuated by the piston 1 9' in precisely thesame manner as the structure first described.

The cylinder 18 is provided with a screwthreaded cap 25, having acentral perforation 26, and into which and registering with theperforation 26 is a pipe 27, which (see Fig. 2) extends upwardlypreferably above the running-board 28 of an engine, and ahorizontalextension opening into the shell 29, inI which is the plug 30 of athree-way cock, which is also connected with the air-brake system (notshown) of a railroad-train by a pipe 31 and with the steam-boiler by thepipe 32 in which is anordinary stop cock or valve 33, (see Fig. 2,) apipe 34 at a point between the ipes 27 and 32 serving as adischarge-outlet or both steam and air when released from the cylinder18, as hereinafter described, which pipe 34 preferably extendsdownwardly and has its discharge-o ening at a oint below the boiler orthe asli-box thereo as indicated in Fig'. 2. 1

In the plug 30 are three radial passages 35, 36,.and 37 in commoncommunication with each other, as shown at the axis of the plug, but maybe at any other point within the confines thereof, the passage 35 beingfor the purposes of connectionv ith the steam-supply pipe 32, thepassage 36 for connection with both the air-pipe v31 and thecylindersupply pipe 27, and the assage 37 for comf-munication with both't e cylinder-supply pipe 27 and the discharge-pipe 34.-

The passages 36 and 37 are enlarged at their outer ends i stead of, asma be, havli of their present greatest diameter. The pipe 31 is coupledto a pipe 40 (see Fig. 2) of the air-brake system of a railroad-train orother system, preferably at a point between the usual valve 41,controlled by the I lever 42 and the air-reservoiron the engine,

are seated.

v'and the sprin 21 is so adjusted that a pressure of, say, ty or sixtypounds will compress it and force the piston 20 to the limit of its,forward stroke and move the piston-rod vuntil the weighted ends of thevalves ass downwardly off the cam 23 and the va ves In the operation..`of the device as indicated by the positionof the triple.l cock in Fig. 3the v pistn-cylinder is in open communication' with the steam-pi e 32and supposedly with the boilerthroug the opening of the valve 33, withthe result that if the pressure in the steam-boiler is above sixty orseventy poundspressure, or whatever pressure the spring 21 is adjustedto, such spring is compressed and the piston and its rod 19 are at thelimit of their forward stroke and the valves 10 of the cylinder-cockseated; but if while in this position the steam-pressure in the boileris reduced below that for which the spring 21 is set the spring willthen expand and force the piston 20 and its rod 19 to the limit of theirbackward strokes, with the result that the valves 10, through their rods12 and weights `15 and the cams 23 on the piston-rod, will be forcedupwardly off their seats, and thereupon water in the cylinder will bedischarged throu h the cylinder-cocks and downwardly from t eirdischarge-o enings 14, and said valves will not again seat untilthe'piston is subjected to a steam or other pressure above that forwhich the spring is set. When, however, there is the continuous higherpressure in the boiler and it is desirable to i the meantime unseat thevalves and discharge water from the cylinder, the plug 30 of thethree-way cock is turned in the direction indicated by the arrow in Fig.3-that is to say, until the way 35 has passed beyond register with thesteain-pipe 32 and the ways 36 and 37 are respectively in register withthe pipes 27 and 34, whereupon the steam in the cylinder 18 willdischarge through the ways 36 and 37 andl thence outwardly into the airthrough the pipe 34. Preferably, however, the i8- ton 20, its spring 21,and rod 19 are pre cr- Yxoc -and t e plug 30 of the three-way cock isturned in the opposite direction until the ways 36 and 37 arerespectively in register with the pipes 31 and 27. If while in .theabove position the air-pressure in the enginereservoir. or from anysource is above that for which the spring 21 is adjusted, tlie springwill befcoinpressed and the piston an'd piston-rod will be at the limitof their forward stroke and the valves of the cylindercocks seated andremain .seated until the hacppening of one of two things-`namely, a reuction in pressure in the air-reservoir below that resisted by thespring or the turning ofthe plug 30 of the three-way cock until the ways36 and 37 are respectively in register with the pipes 27 and 34, andwhereupon and on the escapeof the air from the cylinder out reservoir is`reduced below the minimum pressure it is designed to have the valveswill not only be automatically actuated, but the discharge from thecylinder-cock will serve.

as a signal notifying the engineer that his pressure is too low. Again,if the pipe connecting the air-pump with the main reservoir becomesgummed up and thepum is yro ' in the cylinders 3 5 vand thereby workinghard, the engineer will be Warne by the discharge from the cylinder-cockthat he is not getting kthe proper pressure and that his pum is workinga' ainst itsl own pressure' and per aps running ot and burn1ng.\ Inevent the' locomotive should lose its air in the main reservoir ltheengineel; will likewise be warned that his air is gone, assumin that'the gage registers properly, but in rea ity is stuck and needs testmg.

When steam to the exclusion of air is emloyed for actuating thecylinder-cocks, as before described, both cylinders should be connectedby a steam-pipe withthe boiler and, as may be, by'a branch (not shown)extending from pipe 27, Fig. 2, to the cylinder on the opposite side ofthe engine. When using steam, the reductionor cutting oli theSteam-pressure'operates precisely the same as' the air to automaticallyopen the cylindercocks. It is therefore'obvious'that assoon as alocomotive is run into a lroundhouse the pressure is released from backof the piston in the cylinder-cock,` the valves of the cylinder-cockswilll be o en, and any condensation lbedischarged therefrom, revent thefreezing up and Furtherbreakin of t e steam-cylinder.

.t more, W t en the air-pressure is belowa certain oint`say sixty orseventy poundsthe cyl-l mder-cocks will be open, with the result that'the engine will be revented 'from .running away incase of a lea"throttle. i

Aside from the use .of the three-way cock the operation ofthecylinden-cocks to their I pistonnecessitates the'employment'of butlafrom the cylinder-cock to s" le i e tegengie-cab an connected with themainreservoir pressure'at thebrake-valve and providing said pipe with acock o'r valve, so.

that it maybe cut in or out, as voccasion requires.

My improved cylinder-cock may also be opi piston, a piston-rod,cam-surfaces on said rod l directly engaging said valves, and a springactuating aid piston-rod in one direction, substantia ly as described.

2. A cylinder-,cock structure comprising in combination weighted valvesseating| by gravity, a cylinder, a piston and a piston-rod providedwithcam-surfaces and adapted to actuate said valves off and ontheir seats, a

pipe connection therefor with steam' and air pipes and a three-way cockcontrolling the supply of air or steam" to said cylinder and theirdischarge therefrom, substantially as described.

3. *A cylinder-cock structure comprising in combination weighted valvesseating gravity, a cylinder, a iston-rod provided with cam-surfacesdirect y engaging and actuating said valves, a spring actuatingI saidrod in one direction, a thfree-wa coc a pi e connection between said cocland cylin er and means for su plyingsteam or air alternately to `saidcociir and whereby the supply to and discharge from thecylinder may becontrolledand regulated, substantially as described,- f

l '-ARLH. oBER'roP.

Witnesses: JNO. G. ELLIo'r'r,f '.M. REEDEB. l

